Main Keys for "lead***ores"
| Title | Author(s) | Publication | Year | Link to Article |
|---|---|---|---|---|
| Tri-state zinc-lead ore reserves | Ruhl, O. | U.S. Bureau of Mines, Report of Investigations no. 3922, 7 pages | 1946 | N/A |
| Zinc-lead ore reserves of the Tri-state district, Missouri-Kansas-Oklahoma | Ruhl, O.; Allen, S.A.; and Holt, S.P. | U.S. Bureau of Mines, Report of Investigations no. 4490, 59 pages | 1949 | N/A |
Found 2 result(s).